<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="../vue.js"></script>
</head>

<body>
    <div id="app">
        <h2>{{message | reverses|css}}</h2>
    </div>
    <script>
        new Vue({
            el: "#app",

            filters: {
                //反转字符串
                reverses(res) {
                    console.log(res);
                    // return arg.split("").reverse().join("");
                    return res.split("").reverse().join("");
                },
                //首字母大写
                css(arr) {
                    return arr.charAt(0).toUpperCase() + arr.slice(1);
                },
            },
            data: {
                message: "abcdef",
                add: "123456",
            },
        });
    </script>
</body>

</html>